underage

adjective

un·​der·​age ˌən-dər-ˈāj 

1

: of less than mature or legal age

2

: done by or involving underage persons

underage drinking

Examples of underage in a Sentence

They were not allowed into the club because they were underage.

Recent Examples on the Web

If an underage driver is caught with alcohol and the owner of the vehicle isn’t old enough to legally drink, the car can be impounded at the owners expense for no more than 30 days for each violation. — Sacbee.com, 21 Sep. 2026

Novello’s research focused largely on pediatrics, organ transplants, AIDS, smoking, underage drinking, women’s health, and the health of minorities. — Nicole Harris, Parents, 19 Sep. 2026

On the campaign trail, Paxton has touted his lawsuits against major social media companies and his calls for restrictions on the ability of AI bots to interact with underage users. — Diana Paulsen, ABC News, 18 Sep. 2026

On Tuesday, Montgomery County police officers were called to a hospital where an underage teen girl reported a rape. — Louis Casiano , Bill Melugin, FOXNews.com, 18 Sep. 2026

Word History

First Known Use

1561, in the meaning defined at sense 1

Kids Definition

underage

adjective

un·​der·​age ˌən-də-ˈrāj 

: of less than mature or legal age